i put headers on a few weeks ago and everything was great, no check engine light or anything

i drove around 500 miles and then on saturday the light came on

today (200 more miles later) i revved up a good bit for a buddy who hadn't heard the new exhaust yet, and right when i put it into drive after the rev the light went off.

not that im complaining but does anybody know what happened there?

 

Go to Autozone. Get it scanned. My guess is if you didn't get it tuned, your O2's are reading slightly off.

 

Buy EASE then you can check codes and clear them.........

 

maybe i wasn't clear, but the light is off, the code went away after 200 miles after i revved it up

i'm just curious what could possibly fix itself like that

 

bumpbump

 

Something in the parameters read off, scan the car, clear the codes and recheck, now you probably in 500 miles put enough drive cycles on it so it read something off, the light going off really doesnt matter, if a code tripped, a code tripped.

 

It's probably the good ole P0151 & 152 O2 sensor heater performance codes. Every time me or someone I know put headers on a car these codes come up. I read once that people are using the corvette rear O2 sensors to fix this problem b/c the heaters are better. Myself I just turn the codes off w/ HPTuners.

 

same thing happend to me it was my o2 sensors..